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    <title>gettest1</title>
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    链接1：一个键传递一个值
{#    <a href="/getTest2/?a=1&b=2">gettest2</a><br>#}
    <a href="{% url 'booktest:getTest2' a=1&b=2 %}">gettest2</a><br/>
    链接2：一个键传递多个值
    <a href="/getTest3/?a=1&a=2&b=3">gettest3</a>
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